A quick hypertext drive: Except for the Indianapolis suburbs, the outskirts of Fort Wayne and Lansing, and Flint, I-69 is almost entirely four lanes, rural, and fairly flat. There is one stretch north of Fort Wayne that features rolling hills, but that’s about it.

Six-lane stretches are found around all of the cities mentioned above, with an eight-lane stretch through Flint. I-69 is notable for being an east-west route, in spite of its odd number, from Lansing to Port Huron. At one time, signage stating “I-69 NORTH BECOMES I-69 EAST” (or “WEST BECOMES SOUTH” the other way) was present at the location of this directional change northwest of Lansing, but it has been taken down.